diff --git a/setup.py b/setup.py
index 627255344..c80ddf37e 100755
--- a/setup.py
+++ b/setup.py
@@ -142,6 +142,10 @@ def run(self):
                 "splunklib.modularinput",
                 "splunklib.searchcommands"],
 
+    install_requires=[
+            "deprecation",
+        ],
+
     url="http://github.com/splunk/splunk-sdk-python",
 
     version=splunklib.__version__,
diff --git a/tox.ini b/tox.ini
index b5bcf34cb..e45dbfb9d 100644
--- a/tox.ini
+++ b/tox.ini
@@ -31,7 +31,6 @@ deps = pytest
        xmlrunner
        unittest-xml-reporting
        python-dotenv
-       deprecation
 
 distdir = build
 commands =